Gas hydrates, chemical compounds of water and natural gas, are increasingly being studied for their potential to be huge reservoirs of energy, possibly causing sea floor instability, and significant contributors to global warming.
A. to be huge reservoirs of energy, possibly causing sea floor instability, and
B.to be huge reservoirs of energy, possibly causing sea floor instability, and even as
C.as huge reservoirs of energy, as possible causes of sea floor instability,and even as
D.as huge reservoirs of energy, and the possible cause of sea floor instability,
E.as huge reservoirs of energy, possibly causing sea floor instability, and
大伙选啥？
E。中causing sea floor instability, and （causing）significant contributors to global warming，后面的causing也不通顺啊/
我也选了E的，开始的时候
could you pls tell why A? and why E cannot form the parallelity though it seems
thanks
"as huge reservoirs of energy, possibly causing sea floor instability, and" in E is wrong for no "as" after "and" .
if you want to use "as X and as Y", you must complete the sentence by adding the preposition word before every parallel noun.
And C is wrong for it mistakenly forms a parallelity "their potential as huge reservoirs of energy, as possible causes of sea floor instability,and even as significant contributors to global warming".
First, "their potential as possible causes" seems ridiculous.
Second, "potential to" is better than "potential as".
Third, the most different part from Choice A, whta causes the "sea floor instability"? The "energy", not "Gas hydrates".
Thus, we have A reading "Gas hydrates are increasingly being studied for their potential to be huge reservoirs of energy, possibly causing sea floor instability, and significant contributors to global warming" where "possibly causing sea floor instability" is used to modify "energy".
Hope that explans.
wooowa...thanks so much.
I think i neglect a point that A is "being studied for their potential to be .....and significant contributors ," creating the main structure and parallelism of the sentence .
At the very beginning, i make the mistakes: 1.pontential as shoule be used here.( BTW, i am still a bit doubtful that "potential to" is better than "potential as". why?
and A, why "to be "can be omited after "and",while "as" cannot?
2.i mistakenly supposed that "significant contributors " is the object of "causing.but in fact, it should be the object of "potential"...
xiexie
我选C，as+adj+复数名词的平行，蛮漂亮的。如果用现在分词的causing，首先放在两个成分中间很尴尬。表伴随的话只有修饰谓语are，我觉得不太好。
当然，一家之言，仅供参考。
我选C，as+adj+复数名词的平行，蛮漂亮的。如果用现在分词的causing，首先放在两个成分中间很尴尬。表伴随的话只有修饰谓语are，我觉得不太好。
当然，一家之言，仅供参考。
TONY 也说得有点道理。as+adj+复数名词的平行的确有可取的地方。但是说到果用现在分词的causing，首先放在两个成分中间很尴尬。表伴随的话只有修饰谓语are，causing 应该是修饰energy，怎么说修饰are呢？知识薄弱，不太懂的说，呵呵。。。
另外这里究竟考potential to be和potential as吗？还是更考逻辑和平行？
这道题目就是A C E的争议了。
请大家继续发表
我觉得答案A是正确的。
（1）有...潜力的习惯用法是 potential to 和potential for.而不是potential as.
(2)to be huge reservoirs of energy, possibly causing sea floor instability, and significant contributors to global warming.红色字体平行。
(3)possibly causing sea floor instability相当于平时语法中的which从句，修饰其前面的词。
A of B, which is……这里的which是可以越前指代的，就会出现修饰A/B的歧义。不稳定是energy或是reservior引起的？这不对吧，因该是由Gas hydrates引起的吧？。所以这里把causing看作现在分词表伴随结果伙伴随动作更合理。那么，伴随分词修饰的是主句谓语，那么就是are了（V22，不管我的答案是否正确，这个语法知识点可以回答你的问题）。如果是伴随，那么放在中间就很尴尬。（时隔太久，想不起OG上是第几道题了，但这个知识点是有的）。
最后说一句：最工整的平行可以带来最严谨的句子结构，平行，是我认为GMAT语法的first priority。我的答案绝对不是绝对正确的，但我的这一点点忠告希望能对大家有所帮助。
我靠TMD，这是什么题目，很难定夺！！！
A中有两个点：potential to be 和 possibly causing.....
我们是否要明确究竟用to be好还是as 好？
这里possibly causing 可以说修饰前面are increasingly being studied....，possibly causing ....，and （to be这里是否能省略还是个问题）significant contributors to global warming.这样，possibly causing 就不知道究竟修饰are还是energy了。这是不明确的地方。
C.工整平行：as ...., as ....,and even as ...，除了也许 to be 要比as好外（不确定），但是还有什么理由要说C是错的呢？
哎呀皑皑~~~~~~
I would prefer logical meaning to form the question appears.
U can omit "possibly causing..." for it is an independent part and still the sentence can be established.
for potential, I prefer "potential to do"
| 欢迎光临 ChaseDream (https://forum.chasedream.com/) | Powered by Discuz! X3.3 |